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Assessment of contaminants in blue sharks from the Northeast Atlantic: Profiles, accumulation dynamics, and risks for human consumers

2023Journal article Restricted access
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dc.contributor.authorAlves, Luís M.F.
dc.contributor.authorLemos, Marco F.L.
dc.contributor.authorMoutinho, Ariana
dc.contributor.authorCeia, Filipe R.
dc.contributor.authorJiménez, Begoña
dc.contributor.authorCabral, Henrique
dc.contributor.authorMuñoz-Arnanz, Juan
dc.contributor.authorNovais, Sara C.
dc.date.accessioned2023-09-04T13:25:54Z
dc.date.available2023-09-04T13:25:54Z
dc.date.issued2023
dc.descriptionThis study had the support of Fundação para a Ciência e a Tecnologia (FCT) through the project BLUESHARKER (PTDC/CTAAMB/29136/2017), co-financed by COMPETE2020 (POCI-01-0145-FEDER-029136), the grant to MARE – Marine and Environmental Sciences Centre (UIDB/04292/2020 and UIDP/04292/2020) and the Associate Laboratory ARNET (LA/P/0069/2020), the grant awarded to Luís Alves (SFRH/BD/122082/2016), and the transitory norm contract to Filipe Ceia (DL57/2016/CP1370/CT90). Sara Novais is funded by national funds (OE), through FCT, in the scope of the framework contract foreseen in the numbers 4, 5, and 6 of the article 23, of the Decree-Law 57/2016, of August 29, changed by Law 57/2017, of July 19.pt_PT
dc.description.abstractChemical pollution is a major threat to marine ecosystems, and top predators such as most shark species are extremely vulnerable to being exposed and accumulating contaminants such as metals and persistent organic pollutants (POPs). This work aimed to study the degree, composition, and the sources of contamination in the blue shark (Prionace glauca) inhabiting the Northeast Atlantic, as well as the potential risk faced by human consumers. A total of 60 sharks were sampled in situ aboard fishing vessels, and the concentrations of a set of metals and POPs were analysed in various tissues and complemented with stable isotope analyses. High levels of contaminants were found in most sharks sampled. The concentrations of most metals were higher in the muscle when compared with the liver. Regarding the dangers to consumers posed by the concentrations of arsenic (As), mercury (Hg), and lead (Pb), over 75% of the sharks presented muscle concentrations of at least one contaminant above the legal limits for human consumption, and a risk assessment determined that consumption of meat of these sharks exceeding 0.07 Kg per week could potentially expose human consumers to dangerous amounts of methylmercury (MeHg). Additionally, the assessment of single contaminants may lead to an underestimation of the risk for the human health. Finally, the overall accumulation of contaminants seems to be mostly influenced by the sharks’ geographical distribution, rather than sex, size, or trophic level of their prey.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLuís M.F. Alves, Marco F.L. Lemos, Ariana B. Moutinho, Filipe R. Ceia, Juan Muñoz-Arnanz, Begoña Jiménez, Henrique Cabral, Sara C. Novais, Assessment of contaminants in blue sharks from the Northeast Atlantic: Profiles, accumulation dynamics, and risks for human consumers, Environmental Pollution, Volume 316, Part 1, 2023, 120467, ISSN 0269-7491, https://doi.org/10.1016/j.envpol.2022.120467.pt_PT
dc.identifier.doi10.1016/j.envpol.2022.120467pt_PT
dc.identifier.issn0269-7491
dc.identifier.issn1873-6424
dc.identifier.urihttp://hdl.handle.net/10400.8/8757
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationMarine and Environmental Sciences Centre
dc.relationMarine and Environmental Sciences Centre
dc.relationBiomonitoring Atlantic deepwaters through the assessment of biomarkers in sharks
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0269749122016815pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/pt_PT
dc.subjectElasmobranchs human risk analysispt_PT
dc.subjectMarine biomonitoringpt_PT
dc.subjectTXRFpt_PT
dc.subjectMetalspt_PT
dc.subjectPollutionpt_PT
dc.titleAssessment of contaminants in blue sharks from the Northeast Atlantic: Profiles, accumulation dynamics, and risks for human consumerspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMarine and Environmental Sciences Centre
oaire.awardTitleMarine and Environmental Sciences Centre
oaire.awardTitleBiomonitoring Atlantic deepwaters through the assessment of biomarkers in sharks
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04292%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04292%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POR_CENTRO/SFRH%2FBD%2F122082%2F2016/PT
oaire.citation.titleEnvironmental Pollutionpt_PT
oaire.citation.volume316pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamPOR_CENTRO
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project.funder.identifierhttp://doi.org/10.13039/501100001871
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project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
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rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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